booting VM form volume crashes by timeout creating volume

[Julia Portnova]

Method _await_block_device_map_created in nova/compute/manager.py makes 30 retries with 1 sec interval to Cinder and checks volume status. If it is not "available" in 30 retries then it raises exception.
In some cases 30 attempts with 1 sec interval is not enough for volume to be created.
For example when we are creating volume from large snapshot.

Also https://review.openstack.org/#/c/40603/ introduces ability to create volume form image on booting VM.
In this case image needs to be downloaded and if it is not in RAW format - converted.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/42876

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/42876
Committed: http://github.com/openstack/nova/commit/634b4f36a22b29bba91b065e57d416e39d8d956f
Submitter: Jenkins
Branch: master

commit 634b4f36a22b29bba91b065e57d416e39d8d956f
Author: Yulia Portnova <email address hidden>
Date: Tue Sep 3 11:47:59 2013 +0300

    Increase volume created checking retries to 60

    In some cases 30 retries with 1 sec interval is not enough for
    volume to be created.
    Increased max tries to 60

    Fixes bug 1213953

    Change-Id: I6bcd395a4bac940387384cc85691d7219cf90e63

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/52224